Adjustable ventilator for windows.



H. CRAWFORD.

ADJUSTABLE VENTILATOR FOR WINDOWS. APPLICATION FILED JAN-4, 1913.

1,070,421. Patented Aug. 19, 1913.

Inventor by V I I l Attorneys COLUMBIA PLANOGRAPH co., \VASHIN GGGGGGG c.

HARRY CRAWFORD, OF TOLEDO, OHIO.

ADJUSTABLE VENTILATOR FOR WINDOWS.

Specification of Letters Patent.

Patented Aug. 19,1913.

Application filed January 4, 1913. Serial No. 740,242.

To all whom 2'25 may concern:

Be it known that I, HARRY CRAWFORD, a citizen of the United States, residing at T0- ledo, in the county of Lucas and State of Ohio, have invented a new and useful Adjustable Ventilator for l vindows, of which the following is a specification.

The present invention appertains to an adjustable ventilator for windows, and particularly to those which are adapted to be inserted between the sill and lower sash of a window.

It is the object of the present invention to provide a device of the character indicated which may be readily and conveniently positioned on the sill below the lower sash, and which may be extended and contracted to accommodate the particular width of the window casing.

It is also the object of the present invention to provide a device of the character specified which shall be of utmost simplicity, durability, compactness, rigidity and which shall be inexpensive, as well as serviceable, efficientand convenient in its use.

i Vith the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

The invention has been illustrated in its preferred embodiment in the accompanying drawings, wherein similar reference characters have been employed to denote corresponding parts, and wherein 1- Figure 1 is an elevation of the ventilator. Fig. 2 is a longitudinal central section thereof. Fig. 8 is an enlarged cross section of the ventilator as in use. Fig. t is an enlarged sectional detail taken on the line 4Let of Fig. 1. Fig. 5 is a fragmental detail of a modification or variation.

Referring specifically to the drawing, the ventilator embodies in its essentials, a pair of telescopic members 6 and 6, which are preferably stamped or fashioned from sheet metal or the like, so that they are ii-shaped in cross sect-ion. The sides of the telescopic members are relatively wide and at small acute angles relative to each other, the corners or crotches of the members being relatively sharp, although they are slightly rounded. The respective sides 7 and 7 of the two members are adapted to be disposed inwardly, and are hereinafter referred to as the inner sides, whereas the other sides 8 and 8 are adapted to be disposed outwardly relative to the windows to which the ventilator is applied. The outer sides 8 and 8 are narrower than the sides 7 and 7, as will clearly appear by reference to Fig. 3.

The edges 9 and 10 of the inner and outer sides of the outer or female member 6, respectively, are bent back or inwardly to provide channels or guides slidably receiving the respective edges 9 and 10 of the inner or male member 6, the edges 9 and 10 being bent or folded back. In this manner, the two telescopic members are adapted to be distended and retracted in order that they may accommodate various windows, and in order to permit them to be readily applied to and removed from the window.

A short leg 11 is secured to the outer side 8 of the female or outer member 6 adjacent each end, while a leg 11 is secured to the outer end of the side 8 of the telescopic member 6. These legs 11 and 11 serve to support the outer sides of the telescopic members, it being understood that the edges of the inner sides and the legs are adapted to seat on the window sill or the like.

The outer end of the female member 6 is bent back or inwardly as designated by the numeral 12, whereas both ends of the other or male members 6 are bent similarly, as denoted bythe numeral 12, the ends and edge of the two members being bent back or inwardly as defined, providing for rigidity, as well as otherwise increasing the efficiency of the device.

The inn-er sides '4' and 7 of the telescopic members are each provided with an opening 13, having a reticulated or meshed wire panel 1%. The edges 15 of the openings 18 are bent back so that the edges of the panels 14!: may be tucked or engaged thereinunder. The reticulated or meshed wire panels are thus readily secured in position, although it is understood that other suitable means may be employed to this effect. The openings 13 are almost as large as the inner sides them selves so that the inner sides are substantially foraminous throughout the greater portions of their areas.

Instead of providing the inner sides of the telescopic members with the openings and reticulated panels as above indicated, the inner sides 6 may be provided with the perforations or apertures 14 as designated in Fig. 5, so that the inner sides are foraminous to permit of the passage of air therethrough.

It is to be noted that the present ventilator comprises essentially and only two members, and that these members may be readily and inexpensively manufactured and assembled.

In practice, the ventilator may be adapted for use in various Windows, as will be apparent to those versed in the art, the members being telescopic so as to accommodate various widths of windows. The dimensions of the telescopic members are such that their outer ends may readily be received by the sash-Ways or grooves without detracting from the utility of the device. As above indicated, the ventilator is adapted to be disposed below the lower sash of the window and the window sill, as seen in Fig. 3. Thus there is provided an opening between the lower edge of the outer sides and the window sill, permitting the air to pass inwardly or outwardly through the ventilator, the inner foraminous sides permittin the passage of air, and excluding foreign objects or extraneous matter.

An important feature provided by the present ventilator is the fact that the inner sides may be set at various angles between the sill and the lower sash of the window, so as to adjust the space between the edges of the outer sides and the sill, the inner sides being held in place by their contact with the sill and the sash. A second position of the ventilator is indicated in dotted lines in Fig. 3, and when the ventilator is in this position it will be noted that the legs are raised from the sill, the ventilator being retained in position by the weight of the sash and the size of the opening between the edges of the outer sides and the sill being increased.

What is clain ed is The combination with a window casing including a sill and sash ways, and a sash slidable in the said sash ways, of a ventilator disposed between the sill and sash, and embodying a pair of telescoping members of V-shaped cross section, the edges of the inner sides of the said members resting on the sill, the crotches of the said members engaging under the sash, and the remote ends of the said members being projected into the sash ways, the said inner sides being foraminous, and the outer sides of the said members being of substantially less width than the inner sides to provide an opening between the sill and edges of the said outer sides.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

HARRY CRAWFORD. lVitnesses RALEIGH S. Lnrsr, J. J. EIOHNO.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

